8929894

Handover Failure Messaging Schemes

PublishedJanuary 6, 2015
Assigneenot available in USPTO data we have
Technical Abstract

Patent Claims
69 claims

Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.

Claim 1

Original Legal Text

1. A method of communication, comprising: receiving a first message at a first access point from a second access point, wherein the first access point is a target cell and the first message indicates that an access terminal re-establishing a connection at the second access point experienced radio link failure at the first access point; and sending a second message from the first access point to one of the second access point or a third access point, wherein the second message comprises an indication of a type of handover failure associated with the radio link failure.

Plain English Translation

A communication method involves a target cell access point receiving a message from another access point. This message indicates that a device, after being handed over to the target cell, re-established connection at the second access point due to a radio link failure experienced while connected to the target cell. The target cell then sends a second message to either the access point the device re-established the connection with, or a third access point, reporting the type of handover failure related to the radio link failure.

Claim 2

Original Legal Text

2. The method of claim 1 , wherein the indication comprises a too early handover indication.

Plain English Translation

The communication method of claim 1 where, the second message sent from the target cell includes an indication that the handover to the target cell happened too early, resulting in radio link failure and subsequent re-establishment of the connection at another access point.

Claim 3

Original Legal Text

3. The method of claim 1 , wherein the indication comprises a handover to wrong cell indication.

Plain English Translation

The communication method of claim 1 where, the second message sent from the target cell includes an indication that the handover to the target cell was to the wrong cell, meaning the access terminal should have been handed over to a different cell.

Claim 4

Original Legal Text

4. The method of claim 3 , wherein: the access terminal was handed-over from the third access point to the first access point; and the second message is sent to the third access point as a result of a determination point that the first message was received within a defined period of time after the access terminal handoff is completed from the third access point to the first access point.

Plain English Translation

The communication method of claim 3 where, the access terminal was initially handed over from a third access point to the target cell, and the target cell sends the "handover to wrong cell" message to this third access point. This message is only sent if the target cell receives the initial message (indicating radio link failure and reconnection to another cell) within a specific time window after the handover from the third access point to the target cell was completed.

Claim 5

Original Legal Text

5. The method of claim 1 , wherein the first message is a radio link failure (RLF) indication message, and the second message is a handover report message.

Plain English Translation

The communication method of claim 1 where, the initial message received by the target cell (indicating radio link failure and reconnection) is specifically a "radio link failure (RLF) indication message," and the second message sent by the target cell (reporting the handover failure type) is specifically a "handover report message."

Claim 6

Original Legal Text

6. The method of claim 1 , wherein the second access point is a source cell, and the second message is sent from the first access point to the second access point.

Plain English Translation

The communication method of claim 1 where, the second access point (the one the device re-established connection with after radio link failure in the target cell) is the source cell from which the device was originally handed over to the target cell. The second message is therefore sent from the target cell back to this original source cell.

Claim 7

Original Legal Text

7. The method of claim 1 , wherein the second access point is a wrong cell, the third access point is a source cell, and the second message is sent from the first access point to the third access point.

Plain English Translation

The communication method of claim 1 where, the second access point is a "wrong cell" (a cell other than the correct target cell), and the third access point is the original source cell. The second message (reporting the handover failure type) is sent from the first access point (the target cell) to the third access point (the original source cell).

Claim 8

Original Legal Text

8. The method of claim 2 , wherein: the access terminal was handed-over from the second access point to the first access point; and the second message is sent to the second access point as a result of a determination that the first message was received within a defined period of time after the access terminal handoff is completed from the second access point to the first access point.

Plain English Translation

The communication method of claim 2 where, the access terminal was handed over from a second access point to the first access point (target cell). The second message (the too early handover indication) is sent to the second access point only if the first message is received within a defined period of time after the handover from the second access point to the first access point is completed.

Claim 9

Original Legal Text

9. The method of claim 2 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, and an identifier of the access terminal.

Plain English Translation

The communication method of claim 2 where, the second message (the "too early handover" indication) includes the ID of the cell where the radio link failure happened (the target cell), the ID of the cell where the connection was re-established, and the ID of the specific access terminal that experienced the failure.

Claim 10

Original Legal Text

10. The method of claim 8 , wherein the defined period of time commences upon sending of a message by the first access point requesting deletion of a data record pertaining to the access terminal in the second access point.

Plain English Translation

The communication method of claim 8 where, the defined period of time starts when the target cell sends a message to the original cell requesting that the data record for the access terminal be deleted from the original cell. This data record tracks the terminal's session.

Claim 11

Original Legal Text

11. The method of claim 10 , wherein: the data record comprises user equipment context; and the message requesting deletion of the data record comprises a context release request message.

Plain English Translation

The communication method of claim 10 where, the data record mentioned is the user equipment (UE) context, and the message requesting deletion of the data record is a "context release request" message.

Claim 12

Original Legal Text

12. The method of claim 8 , further comprising configuring the defined period of time based on a message received from a network management system.

Plain English Translation

The communication method of claim 8 also includes configuring the length of the time window using a message received from a network management system. This allows for dynamic adjustment of the sensitivity of the handover failure detection.

Claim 13

Original Legal Text

13. The method of claim 4 , wherein the defined period of time commences upon sending of a message by the first access point requesting deletion of a data record pertaining to the access terminal in the third access point.

Plain English Translation

The communication method of claim 4 where, the defined period of time starts when the first access point sends a message to the third access point requesting deletion of a data record pertaining to the access terminal in the third access point.

Claim 14

Original Legal Text

14. The method of claim 13 , wherein: the data record comprises user equipment context; and the message requesting deletion of the data record comprises a context release request message.

Plain English Translation

The communication method of claim 13 where, the data record comprises user equipment context, and the message requesting deletion of the data record comprises a context release request message.

Claim 15

Original Legal Text

15. The method of claim 4 , further comprising configuring the defined period of time based on a message received from a network management system.

Plain English Translation

The communication method of claim 4 also includes configuring the length of the defined period of time based on a message received from a network management system.

Claim 16

Original Legal Text

16. The method of claim 3 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, an identifier of a handover source cell, and an identifier of the access terminal.

Plain English Translation

The communication method of claim 3 where, the second message ("handover to wrong cell" indication) includes the ID of the cell where the radio link failure occurred, the ID of the cell where the connection was re-established, the ID of the original handover source cell, and the ID of the specific access terminal.

Claim 17

Original Legal Text

17. An apparatus for communication, comprising: a receiver configured to receive a first message at a first access point from a second access point, wherein the first access point is a target cell and the first message indicates that an access terminal re-establishing a connection at the second access point experienced radio link failure at the first access point; and a transmitter configured to send a second message from the first access point to one of the second access point or a third access point, wherein the second message comprises an indication of a type of handover failure associated with the radio link failure.

Plain English Translation

An apparatus for communication, including a receiver at a target cell access point. The receiver gets a message from another access point indicating a mobile device experienced radio link failure in the target cell and re-established connection with the sending access point. A transmitter at the target cell sends a second message to either the access point the device re-established with, or a third, reporting the type of handover failure that caused the radio link failure.

Claim 18

Original Legal Text

18. The apparatus of claim 17 , wherein the indication comprises a too early handover indication.

Plain English Translation

The apparatus of claim 17 where, the indication of the handover failure type is a "too early handover" indication, meaning the device was handed over to the target cell prematurely.

Claim 19

Original Legal Text

19. The apparatus of claim 18 , wherein: the access terminal was handed-over from the second access point to the first access point; and the second message is sent to the second access point as a result of a determination that the first message was received within a defined period of time after the access terminal handoff is completed from the second access point to the first access point.

Plain English Translation

The apparatus of claim 18 where, the access terminal was handed-over from the second access point to the first access point (target cell); and the second message (the too early handover indication) is sent to the second access point only if the first message is received within a defined period of time after the handover from the second access point to the first access point is completed.

Claim 20

Original Legal Text

20. The apparatus of claim 17 , wherein the indication comprises a handover to wrong cell indication.

Plain English Translation

The apparatus of claim 17 where, the indication of the handover failure type is a "handover to wrong cell" indication.

Claim 21

Original Legal Text

21. The apparatus of claim 20 , wherein: the access terminal was handed-over from the third access point to the first access point; and the second message is sent to the third access point as a result of a determination point that the first message was received within a defined period of time after the access terminal handoff is completed from the third access point to the first access point.

Plain English Translation

The apparatus of claim 20 where, the access terminal was handed-over from the third access point to the first access point (target cell); and the second message (the handover to wrong cell indication) is sent to the third access point only if the first message is received within a defined period of time after the handover from the third access point to the first access point is completed.

Claim 22

Original Legal Text

22. An apparatus for communication, comprising: means for receiving a first message at a first access point from a second access point, wherein the first access point is a target cell and the first message indicates that an access terminal re-establishing a connection at the second access point experienced radio link failure at the first access point; and means for sending a second message from the first access point to one of the second access point or a third access point, wherein the second message comprises an indication of a type of handover failure associated with the radio link failure.

Plain English Translation

An apparatus for communication with means for receiving a message at a target cell access point from another access point, indicating a device experienced radio link failure in the target cell and re-established connection at the sending access point, and means for sending a second message from the target cell to either the access point the device re-established with or a third, reporting the handover failure type that caused the radio link failure.

Claim 23

Original Legal Text

23. The apparatus of claim 22 , wherein the indication comprises a too early handover indication.

Plain English Translation

The apparatus of claim 22 where, the indication comprises a too early handover indication.

Claim 24

Original Legal Text

24. The apparatus of claim 23 , wherein: the access terminal was handed-over from the second access point to the first access point; and the second message is sent to the second access point as a result of a determination that the first message was received within a defined period of time after the access terminal handoff is completed from the second access point to the first access point.

Plain English Translation

The apparatus of claim 23 where, the access terminal was handed-over from the second access point to the first access point (target cell); and the second message (the too early handover indication) is sent to the second access point only if the first message is received within a defined period of time after the handover from the second access point to the first access point is completed.

Claim 25

Original Legal Text

25. The apparatus of claim 22 , wherein the indication comprises a handover to wrong cell indication.

Plain English Translation

The apparatus of claim 22 where, the indication comprises a handover to wrong cell indication.

Claim 26

Original Legal Text

26. The apparatus of claim 25 , wherein: the access terminal was handed-over from the third access point to the first access point; and the second message is sent to the third access point as a result of a determination point that the first message was received within a defined period of time after the access terminal handoff is completed from the third access point to the first access point.

Plain English Translation

The apparatus of claim 25 where, the access terminal was handed-over from the third access point to the first access point (target cell); and the second message (the handover to wrong cell indication) is sent to the third access point only if the first message is received within a defined period of time after the handover from the third access point to the first access point is completed.

Claim 27

Original Legal Text

27. A computer-program product, comprising: a non-transitory computer-readable medium comprising code for causing a computer to: receive a first message at a first access point from a second access point, wherein the first access point is a target cell and the first message indicates that an access terminal re-establishing a connection at the second access point experienced radio link failure at the first access point; and send a second message from the first access point to one of the second access point or a third access point, wherein the second message comprises an indication of a type of handover failure associated with the radio link failure.

Plain English Translation

A computer-program product contains instructions stored on a non-transitory medium. When executed by a computer, the code causes the system to: receive a message at a target cell access point from another access point, where the message indicates a device experienced radio link failure after handover to the target cell and re-established connection with the sending access point. The code further causes the system to send a second message from the target cell to either the access point the device re-established with, or a third, reporting the type of handover failure associated with the radio link failure.

Claim 28

Original Legal Text

28. The computer-program product of claim 27 , wherein the indication comprises a too early handover indication.

Plain English Translation

The computer-program product of claim 27, where the indication of handover failure type is a "too early handover" indication.

Claim 29

Original Legal Text

29. The computer-program product of claim 28 , wherein: the access terminal was handed-over from the second access point to the first access point; and the second message is sent to the second access point as a result of a determination that the first message was received within a defined period of time after the access terminal handoff is completed from the second access point to the first access point.

Plain English Translation

The computer-program product of claim 28 where, the access terminal was handed-over from the second access point to the first access point (target cell); and the second message (the too early handover indication) is sent to the second access point only if the first message is received within a defined period of time after the handover from the second access point to the first access point is completed.

Claim 30

Original Legal Text

30. The computer-program product of claim 27 , wherein the indication comprises a handover to wrong cell indication.

Plain English Translation

The computer-program product of claim 27, where the indication comprises a handover to wrong cell indication.

Claim 31

Original Legal Text

31. The computer-program product of claim 30 , wherein: the access terminal was handed-over from the third access point to the first access point; and the second message is sent to the third access point as a result of a determination point that the first message was received within a defined period of time after the access terminal handoff is completed from the third access point to the first access point.

Plain English Translation

The computer-program product of claim 30 where, the access terminal was handed-over from the third access point to the first access point (target cell); and the second message (the handover to wrong cell indication) is sent to the third access point only if the first message is received within a defined period of time after the handover from the third access point to the first access point is completed.

Claim 32

Original Legal Text

32. A method of communication, comprising: receiving a first message at a first access point from an access terminal, wherein the first message indicates that the access terminal re-establishing a connection at the first access point experienced radio link failure at a second access point, the first access point being a target cell and the second access point being a source cell; and sending a second message from the first access point to the second access point, wherein the second message informs the second access point of the connection re-establishment of the access terminal to the first access point.

Plain English Translation

A communication method includes receiving a message at a target cell from a mobile device. The message indicates the device experienced radio link failure in the source cell before the handover completed, and is now reconnecting at this target cell. The target cell then sends a second message back to the source cell, informing it that the device re-established connection at the target cell.

Claim 33

Original Legal Text

33. The method of claim 32 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, and an identifier of the access terminal.

Plain English Translation

The communication method of claim 32 where, the second message (sent back to the source cell) contains the ID of the cell where the radio link failure occurred (the source cell), the ID of the cell where the device re-established connection (the target cell), and the ID of the specific device.

Claim 34

Original Legal Text

34. The method of claim 33 , wherein the first message identifies the cell at which the radio link failure occurred.

Plain English Translation

The communication method of claim 33 where, the first message (sent from the device to the target cell) includes the ID of the cell where the radio link failure occurred (the source cell).

Claim 35

Original Legal Text

35. The method of claim 32 , wherein the first access point is an access point selected by the access terminal to re-establish the connection after the radio link failure at the second access point.

Plain English Translation

The communication method of claim 32 where, the target cell is selected by the device itself for re-establishing the connection after experiencing the radio link failure in the source cell.

Claim 36

Original Legal Text

36. The method of claim 35 , wherein the access terminal selects the first access point based on received signal strengths of access points detected by the access terminal.

Plain English Translation

The communication method of claim 35 where, the device selects the target cell based on the signal strength it measures from different access points in the area. It connects to the access point with the strongest signal.

Claim 37

Original Legal Text

37. The method of claim 32 , wherein the radio link failure occurred as a result of inadequate configuration of handover triggering parameters at the second access point that caused handover from the second access point to the first access point to be triggered too late for successful handover.

Plain English Translation

The communication method of claim 32 where, the radio link failure happened because the source cell's handover triggering parameters were not configured correctly. Specifically, handover to the target cell was triggered too late, causing the device to lose connection before it could successfully complete the handover.

Claim 38

Original Legal Text

38. The method of claim 32 , wherein the radio link failure occurred as a result of inadequate configuration of handover triggering parameters at the second access point that caused the access terminal not to be handed-over.

Plain English Translation

The communication method of claim 32 where, the radio link failure occurred because the source cell's handover parameters were misconfigured such that no handover to the target cell was even attempted.

Claim 39

Original Legal Text

39. An apparatus for communication, comprising: a receiver configured to receive a first message at a first access point from an access terminal, wherein the first message indicates that the access terminal re-establishing a connection at the first access point experienced radio link failure at a second access point, the first access point being a target cell and the second access point being a source cell; and a transmitter configured to send a second message from the first access point to the second access point, wherein the second message informs the second access point of the connection re-establishment of the access terminal to the first access point.

Plain English Translation

An apparatus for communication includes a receiver at a target cell that gets a message from a device, which states that the device had a radio link failure at the source cell and is now reconnecting at the target cell. A transmitter at the target cell sends a message back to the source cell, informing it that the device re-established the connection at the target cell.

Claim 40

Original Legal Text

40. The apparatus of claim 39 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, and an identifier of the access terminal.

Plain English Translation

The apparatus of claim 39 where, the second message sent back to the source cell contains the ID of the cell where the radio link failure occurred (source cell), the ID of the cell where the device re-established the connection (target cell), and the ID of the device.

Claim 41

Original Legal Text

41. The apparatus of claim 40 , wherein the first message identifies the cell at which the radio link failure occurred.

Plain English Translation

A system for managing radio link failures in wireless communication networks detects and reports failures between a user device and a base station. The apparatus includes a processor and memory storing instructions that, when executed, cause the processor to receive a first message from the user device indicating a radio link failure. The first message includes an identifier of the specific cell where the failure occurred, allowing the network to pinpoint the location of the failure. The apparatus then generates a second message containing the failure information and transmits it to a network node, such as a base station or mobility management entity, for further analysis or corrective action. The system may also determine the type of failure, such as a physical layer or higher-layer failure, and include this in the second message. The apparatus may further receive a third message from the network node, which may contain instructions for the user device to perform a cell reselection or other recovery procedure. The system improves network reliability by enabling precise failure localization and automated recovery mechanisms.

Claim 42

Original Legal Text

42. An apparatus for communication, comprising: means for receiving a first message at a first access point from an access terminal, wherein the first message indicates that the access terminal re-establishing a connection at the first access point experienced radio link failure at a second access point, the first access point being a target cell and the second access point being a source cell; and means for sending a second message from the first access point to the second access point, wherein the second message informs the second access point of the connection re-establishment of the access terminal to the first access point.

Plain English Translation

An apparatus for communication includes means for receiving a message at a target cell from a device which states that the device had radio link failure at a source cell and is now reconnecting at the target cell, and means for sending a second message from the target cell to the source cell, informing the source cell that the device re-established connection at the target cell.

Claim 43

Original Legal Text

43. The apparatus of claim 42 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, and an identifier of the access terminal.

Plain English Translation

The apparatus of claim 42 where, the second message sent back to the source cell contains the ID of the cell where the radio link failure occurred (source cell), the ID of the cell where the device re-established the connection (target cell), and the ID of the device.

Claim 44

Original Legal Text

44. The apparatus of claim 43 , wherein the first message identifies the cell at which the radio link failure occurred.

Plain English Translation

The apparatus of claim 43 where, the first message (sent from the device to the target cell) includes the ID of the cell where the radio link failure occurred (the source cell).

Claim 45

Original Legal Text

45. A computer-program product, comprising: a non-transitory computer-readable medium comprising code for causing a computer to: receive a first message at a first access point from the access terminal, wherein the first message indicates that an access terminal re-establishing a connection at the first access point experienced radio link failure at a second access point, the first access point being a target cell and the second access point being a source cell; and send a second message from the first access point to the second access point, wherein the second message informs the second access point of the connection re-establishment of the access terminal to the first access point.

Plain English Translation

A computer-program product contains instructions stored on a non-transitory medium. When executed by a computer, the code causes the system to: receive a message at a target cell from a mobile device, indicating that the device experienced radio link failure in the source cell, and is now reconnecting at the target cell; and send a second message from the target cell back to the source cell, informing it that the device re-established connection at the target cell.

Claim 46

Original Legal Text

46. The computer-program product of claim 45 , wherein the second message comprises an identifier of a cell at which the radio link failure occurred, an identifier of a cell at which the connection was re-established, and an identifier of the access terminal.

Plain English Translation

The computer-program product of claim 45 where, the second message sent back to the source cell contains the ID of the cell where the radio link failure occurred (the source cell), the ID of the cell where the device re-established the connection (the target cell), and the ID of the device.

Claim 47

Original Legal Text

47. The computer-program product of claim 46 , wherein the first message identifies the cell at which the radio link failure occurred.

Plain English Translation

The computer-program product of claim 46 where, the first message (sent from the device to the target cell) includes the ID of the cell where the radio link failure occurred (the source cell).

Claim 48

Original Legal Text

48. A method of communication of a network management system, comprising: configuring, by the network management system, at least one parameter for detecting handover failure of a handover of an access terminal from a source cell to a target cell, the at least one parameter comprising a parameter for determining whether the access terminal re-established a connection at the source cell or another cell other than the source cell or the target cell within a defined period of time after the access terminal handoff is completed from the source cell to the target cell; and sending, by the network management system, the at least one parameter for detecting handover failure to at least one access point.

Plain English Translation

A communication method performed by a network management system involves configuring parameters to detect handover failures when a device is handed over from a source to a target cell. One parameter determines if the device re-established a connection with the source cell, or another cell different from the source or target cell, within a specific time after the handover to the target cell. These configured parameters are then sent to one or more access points.

Claim 49

Original Legal Text

49. The method of claim 48 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over too early.

Plain English Translation

The communication method of claim 48 where, the configured parameter helps the target cell to determine if the handover from the source cell occurred too early, leading to failure.

Claim 50

Original Legal Text

50. The method of claim 48 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over to a wrong cell, the wrong cell being the target cell.

Plain English Translation

The communication method of claim 48 where, the configured parameter helps the target cell to determine if the handover should have been made to a different cell, and was a "handover to wrong cell" scenario.

Claim 51

Original Legal Text

51. The method of claim 48 , wherein the network management system is an Operations, Administration, and Maintenance (OAM) system.

Plain English Translation

The communication method of claim 48 where, the network management system is an Operations, Administration, and Maintenance (OAM) system.

Claim 52

Original Legal Text

52. The method of claim 49 , wherein the at least one parameter is configured to mitigate too early handovers.

Plain English Translation

The communication method of claim 49 where, the configured parameter is specifically designed to mitigate "too early handover" scenarios.

Claim 53

Original Legal Text

53. The method of claim 49 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The communication method of claim 49 where, the parameter configures the target cell to check if it receives a radio link failure report for the device within a defined period of time after the handover to the target cell.

Claim 54

Original Legal Text

54. The method of claim 50 , wherein the at least one parameter is configured to mitigate handovers to wrong cells.

Plain English Translation

The communication method of claim 50 where, the configured parameter is designed to mitigate handovers to the wrong cell.

Claim 55

Original Legal Text

55. The method of claim 50 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The communication method of claim 50 where, the parameter configures the target cell to check if it receives a radio link failure report for the device within a defined period of time after the handover to the target cell.

Claim 56

Original Legal Text

56. An apparatus for communication, the apparatus being a network management system, comprising: a parameter configurer configured to configure at least one parameter for detecting handover failure of a handover of an access terminal from a source cell to a target cell, the at least one parameter comprising a parameter for determining whether the access terminal re-established a connection at the source cell or another cell other than the source cell or the target cell within a defined period of time after the access terminal handoff is completed from the source cell to the target cell; and a communication controller configured to send the at least one parameter for detecting handover failure to at least one access point.

Plain English Translation

An apparatus for communication acting as a network management system includes a parameter configurer which sets up parameters for detecting handover failures during handovers from a source cell to a target cell. One such parameter determines if the device re-established connection with the source cell (or another cell) within a defined time after the handover to the target cell. A communication controller then sends these parameters to one or more access points.

Claim 57

Original Legal Text

57. The apparatus of claim 56 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over too early.

Plain English Translation

The apparatus of claim 56 where, the parameter is used by the target cell to determine if a device was handed over too early from the source cell.

Claim 58

Original Legal Text

58. The apparatus of claim 56 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over to a wrong cell, the wrong cell being the target cell.

Plain English Translation

The apparatus of claim 56 where, the parameter is used by the target cell to determine whether an access terminal was handed-over to a wrong cell, the wrong cell being the target cell.

Claim 59

Original Legal Text

59. The apparatus of claim 58 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The apparatus of claim 58 where, the parameter allows the target cell to determine if it receives a radio link failure report for the device within a defined period of time after the handover completed.

Claim 60

Original Legal Text

60. An apparatus for communication, the apparatus being a network management system, comprising: means for configuring at least one parameter for detecting handover failure of a handover of an access terminal from a source cell to a target cell, the at least one parameter comprising a parameter for determining whether the access terminal re-established a connection at the source cell or another cell other than the source cell or the target cell within a defined period of time after the access terminal handoff is completed from the source cell to the target cell; and means for sending the at least one parameter for detecting handover failure to at least one access point.

Plain English Translation

An apparatus for communication, functioning as a network management system, includes means for configuring parameters to detect handover failures when handing over a device from source to target cell. One parameter determines if the device re-established with the source (or another cell) within a specific time after the handover. The system also includes means for sending these parameters to one or more access points.

Claim 61

Original Legal Text

61. The apparatus of claim 60 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over too early.

Plain English Translation

The apparatus of claim 60 where, the parameter is used by the target cell to determine if a device was handed over too early from the source cell.

Claim 62

Original Legal Text

62. The apparatus of claim 61 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The apparatus of claim 61 where, the parameter enables the target cell to determine if a radio link failure report is received for the device within a time window after the device was handed over.

Claim 63

Original Legal Text

63. The apparatus of claim 60 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether an access terminal was handed-over to a wrong cell.

Plain English Translation

The apparatus of claim 60 where, the at least one parameter comprises a parameter for use by the target cell to determine whether an access terminal was handed-over to a wrong cell.

Claim 64

Original Legal Text

64. The apparatus of claim 63 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The apparatus of claim 63 where, the parameter enables the target cell to determine if it receives a radio link failure report for the device within a time window after the device was handed over.

Claim 65

Original Legal Text

65. A computer-program product in a network management system, comprising: a non-transitory computer-readable medium comprising code for causing a computer to: configure at least one parameter for detecting handover failure of a handover of an access terminal from a source cell to a target cell, the at least one parameter comprising a parameter for determining whether the access terminal re-established a connection at the source cell or another cell other than the source cell or the target cell within a defined period of time after the access terminal handoff is completed from the source cell to the target cell; and send the at least one parameter for detecting handover failure to at least one access point.

Plain English Translation

A computer-program product in a network management system includes instructions stored on a non-transitory medium. When executed, the code causes the system to: configure parameters for detecting handover failures during handovers from a source to a target cell. One parameter determines if the device re-established a connection with the source cell, or another cell different from the source or target cell, within a specific time after the handover to the target cell. These configured parameters are then sent to one or more access points.

Claim 66

Original Legal Text

66. The computer-program product of claim 65 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether an access terminal was handed-over too early.

Plain English Translation

The computer-program product of claim 65 where, the parameter is for use by the target cell to determine whether an access terminal was handed-over too early.

Claim 67

Original Legal Text

67. The computer-program product of claim 66 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The computer-program product of claim 66 where, the parameter enables the target cell to determine if a radio link failure report is received for the device within a time window after the device was handed over.

Claim 68

Original Legal Text

68. The computer-program product of claim 65 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over to a wrong cell.

Plain English Translation

The computer-program product of claim 65 where, the at least one parameter comprises a parameter for use by the target cell to determine whether the access terminal was handed-over to a wrong cell.

Claim 69

Original Legal Text

69. The computer-program product of claim 68 , wherein the at least one parameter comprises a parameter for use by the target cell to determine whether a radio link failure report is received for the access terminal within a defined period of time after the access terminal handoff is completed to the target cell.

Plain English Translation

The computer-program product of claim 68 where, the parameter enables the target cell to determine if a radio link failure report is received for the device within a time window after the device was handed over.

Patent Metadata

Filing Date

Unknown

Publication Date

January 6, 2015

Inventors

Amer Catovic
Parag A. Agashe
Rajarshi Gupta
Gavin B. Horn
Rajat Prakash
Fatih Ulupinar

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Cite as: Patentable. “HANDOVER FAILURE MESSAGING SCHEMES” (8929894). https://patentable.app/patents/8929894

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